diff --git a/fail2ban/server/database.py b/fail2ban/server/database.py
index 560fbfe5..9f562511 100644
--- a/fail2ban/server/database.py
+++ b/fail2ban/server/database.py
@@ -293,8 +293,12 @@ class Fail2BanDb(object):
 			Jail to be added to the database.
 		"""
 		cur.execute(
-			"INSERT OR REPLACE INTO jails(name, enabled) VALUES(?, 1)",
+			"INSERT OR IGNORE INTO jails(name, enabled) VALUES(?, 1)",
 			(jail.name,))
+		if cur.rowcount <= 0:
+			cur.execute(
+				"UPDATE jails SET enabled = 1 WHERE name = ? AND enabled != 1",
+				(jail.name,))
 
 	@commitandrollback
 	def delJail(self, cur, jail):
@@ -317,7 +321,7 @@ class Fail2BanDb(object):
 		cur.execute("UPDATE jails SET enabled=0")
 
 	@commitandrollback
-	def getJailNames(self, cur):
+	def getJailNames(self, cur, enabled=None):
 		"""Get name of jails in database.
 
 		Currently only used for testing purposes.
@@ -327,7 +331,11 @@ class Fail2BanDb(object):
 		set
 			Set of jail names.
 		"""
-		cur.execute("SELECT name FROM jails")
+		if enabled is None:
+			cur.execute("SELECT name FROM jails")
+		else:
+			cur.execute("SELECT name FROM jails WHERE enabled=%s" %
+				(int(enabled),))
 		return set(row[0] for row in cur.fetchmany())
 
 	@commitandrollback
diff --git a/fail2ban/tests/action_d/test_badips.py b/fail2ban/tests/action_d/test_badips.py
index 3f71b7a3..b0f8b3c3 100644
--- a/fail2ban/tests/action_d/test_badips.py
+++ b/fail2ban/tests/action_d/test_badips.py
@@ -49,7 +49,7 @@ if sys.version_info >= (2,7):
 
 		def testCategory(self):
 			categories = self.action.getCategories()
-			self.assertTrue("ssh" in categories)
+			self.assertIn("ssh", categories)
 			self.assertTrue(len(categories) >= 10)
 
 			self.assertRaises(
diff --git a/fail2ban/tests/action_d/test_smtp.py b/fail2ban/tests/action_d/test_smtp.py
index 35ac2393..b8328743 100644
--- a/fail2ban/tests/action_d/test_smtp.py
+++ b/fail2ban/tests/action_d/test_smtp.py
@@ -101,21 +101,21 @@ class SMTPActionTest(unittest.TestCase):
 		self.assertEqual(self.smtpd.rcpttos, ["root"])
 		subject = "Subject: [Fail2Ban] %s: banned %s" % (
 			self.jail.name, aInfo['ip'])
-		self.assertTrue(subject in self.smtpd.data.replace("\n", ""))
+		self.assertIn(subject, self.smtpd.data.replace("\n", ""))
 		self.assertTrue(
 			"%i attempts" % aInfo['failures'] in self.smtpd.data)
 
 		self.action.matches = "matches"
 		self.action.ban(aInfo)
-		self.assertTrue(aInfo['matches'] in self.smtpd.data)
+		self.assertIn(aInfo['matches'], self.smtpd.data)
 
 		self.action.matches = "ipjailmatches"
 		self.action.ban(aInfo)
-		self.assertTrue(aInfo['ipjailmatches'] in self.smtpd.data)
+		self.assertIn(aInfo['ipjailmatches'], self.smtpd.data)
 
 		self.action.matches = "ipmatches"
 		self.action.ban(aInfo)
-		self.assertTrue(aInfo['ipmatches'] in self.smtpd.data)
+		self.assertIn(aInfo['ipmatches'], self.smtpd.data)
 
 	def testOptions(self):
 		self.action.start()
diff --git a/fail2ban/tests/actionstestcase.py b/fail2ban/tests/actionstestcase.py
index 0ceb35d5..3b9d2d01 100644
--- a/fail2ban/tests/actionstestcase.py
+++ b/fail2ban/tests/actionstestcase.py
@@ -65,12 +65,12 @@ class ExecuteActions(LogCaptureTestCase):
 	def testActionsManipulation(self):
 		self.__actions.add('test')
 		self.assertTrue(self.__actions['test'])
-		self.assertTrue('test' in self.__actions)
-		self.assertFalse('nonexistant action' in self.__actions)
+		self.assertIn('test', self.__actions)
+		self.assertNotIn('nonexistant action', self.__actions)
 		self.__actions.add('test1')
 		del self.__actions['test']
 		del self.__actions['test1']
-		self.assertFalse('test' in self.__actions)
+		self.assertNotIn('test', self.__actions)
 		self.assertEqual(len(self.__actions), 0)
 
 		self.__actions.setBanTime(127)
diff --git a/fail2ban/tests/clientreadertestcase.py b/fail2ban/tests/clientreadertestcase.py
index 0a3734e5..ee362e3d 100644
--- a/fail2ban/tests/clientreadertestcase.py
+++ b/fail2ban/tests/clientreadertestcase.py
@@ -525,12 +525,12 @@ class JailsReaderTest(LogCaptureTestCase):
 				self.assertTrue(actionReader.read())
 				actionReader.getOptions({})	  # populate _opts
 				if not actionName.endswith('-common'):
-					self.assertTrue('Definition' in actionReader.sections(),
+					self.assertIn('Definition', actionReader.sections(),
 						msg="Action file %r is lacking [Definition] section" % actionConfig)
 					# all must have some actionban defined
 					self.assertTrue(actionReader._opts.get('actionban', '').strip(),
 						msg="Action file %r is lacking actionban" % actionConfig)
-				self.assertTrue('Init' in actionReader.sections(),
+				self.assertIn('Init', actionReader.sections(),
 						msg="Action file %r is lacking [Init] section" % actionConfig)
 
 		def testReadStockJailConf(self):
@@ -582,7 +582,7 @@ class JailsReaderTest(LogCaptureTestCase):
 					self.assertTrue(len(actName))
 					self.assertTrue(isinstance(actOpt, dict))
 					if actName == 'iptables-multiport':
-						self.assertTrue('port' in actOpt)
+						self.assertIn('port', actOpt)
 
 					actionReader = ActionReader(
 						actName, jail, {}, basedir=CONFIG_DIR)
@@ -632,11 +632,13 @@ class JailsReaderTest(LogCaptureTestCase):
 
 			# and we know even some of them by heart
 			for j in ['sshd', 'recidive']:
-				# by default we have 'auto' backend ATM
-				self.assertTrue(['add', j, 'auto'] in comm_commands)
+				# by default we have 'auto' backend ATM, but some distributions can overwrite it, 
+				# (e.g. fedora default is 'systemd') therefore let check it without backend...
+				self.assertIn(['add', j], 
+					(cmd[:2] for cmd in comm_commands if len(cmd) == 3 and cmd[0] == 'add'))
 				# and warn on useDNS
-				self.assertTrue(['set', j, 'usedns', 'warn'] in comm_commands)
-				self.assertTrue(['start', j] in comm_commands)
+				self.assertIn(['set', j, 'usedns', 'warn'], comm_commands)
+				self.assertIn(['start', j], comm_commands)
 
 			# last commands should be the 'start' commands
 			self.assertEqual(comm_commands[-1][0], 'start')
@@ -655,7 +657,7 @@ class JailsReaderTest(LogCaptureTestCase):
 					action_name = action.getName()
 					if '<blocktype>' in str(commands):
 						# Verify that it is among cInfo
-						self.assertTrue('blocktype' in action._initOpts)
+						self.assertIn('blocktype', action._initOpts)
 						# Verify that we have a call to set it up
 						blocktype_present = False
 						target_command = ['set', jail_name, 'action', action_name, 'blocktype']
diff --git a/fail2ban/tests/databasetestcase.py b/fail2ban/tests/databasetestcase.py
index 3d156eda..e934ba45 100644
--- a/fail2ban/tests/databasetestcase.py
+++ b/fail2ban/tests/databasetestcase.py
@@ -123,7 +123,7 @@ class DatabaseTest(LogCaptureTestCase):
 
 		self.db.addLog(self.jail, self.fileContainer)
 
-		self.assertTrue(filename in self.db.getLogPaths(self.jail))
+		self.assertIn(filename, self.db.getLogPaths(self.jail))
 		os.remove(filename)
 
 	def testUpdateLog(self):
@@ -318,6 +318,25 @@ class DatabaseTest(LogCaptureTestCase):
 		actions._Actions__checkBan()
 		self.assertLogged("ban ainfo %s, %s, %s, %s" % (True, True, True, True))
 
+	def testDelAndAddJail(self):
+		self.testAddJail() # Add jail
+		# Delete jail (just disabled it):
+		self.db.delJail(self.jail)
+		jails = self.db.getJailNames()
+		self.assertIn(len(jails) == 1 and self.jail.name, jails)
+		jails = self.db.getJailNames(enabled=False)
+		self.assertIn(len(jails) == 1 and self.jail.name, jails)
+		jails = self.db.getJailNames(enabled=True)
+		self.assertTrue(len(jails) == 0)
+		# Add it again - should just enable it:
+		self.db.addJail(self.jail)
+		jails = self.db.getJailNames()
+		self.assertIn(len(jails) == 1 and self.jail.name, jails)
+		jails = self.db.getJailNames(enabled=True)
+		self.assertIn(len(jails) == 1 and self.jail.name, jails)
+		jails = self.db.getJailNames(enabled=False)
+		self.assertTrue(len(jails) == 0)
+
 	def testPurge(self):
 		if Fail2BanDb is None: # pragma: no cover
 			return
diff --git a/fail2ban/tests/misctestcase.py b/fail2ban/tests/misctestcase.py
index 48074d53..5f7d853d 100644
--- a/fail2ban/tests/misctestcase.py
+++ b/fail2ban/tests/misctestcase.py
@@ -23,6 +23,7 @@ __license__ = "GPL"
 
 import logging
 import os
+import re
 import sys
 import unittest
 import tempfile
@@ -32,6 +33,8 @@ import datetime
 from glob import glob
 from StringIO import StringIO
 
+from utils import LogCaptureTestCase, logSys as DefLogSys
+
 from ..helpers import formatExceptionInfo, mbasename, TraceBack, FormatterWithTraceBack, getLogger
 from ..helpers import splitwords
 from ..server.datetemplate import DatePatternRegex
@@ -130,7 +133,7 @@ class SetupTest(unittest.TestCase):
 					  % (sys.executable, self.setup))
 
 
-class TestsUtilsTest(unittest.TestCase):
+class TestsUtilsTest(LogCaptureTestCase):
 
 	def testmbasename(self):
 		self.assertEqual(mbasename("sample.py"), 'sample')
@@ -165,12 +168,88 @@ class TestsUtilsTest(unittest.TestCase):
 			if not ('fail2ban-testcases' in s):
 				# we must be calling it from setup or nosetests but using at least
 				# nose's core etc
-				self.assertTrue('>' in s, msg="no '>' in %r" % s)
+				self.assertIn('>', s)
 			elif not ('coverage' in s):
 				# There is only "fail2ban-testcases" in this case, no true traceback
-				self.assertFalse('>' in s, msg="'>' present in %r" % s)
+				self.assertNotIn('>', s)
 
-			self.assertTrue(':' in s, msg="no ':' in %r" % s)
+			self.assertIn(':', s)
+
+	def _testAssertionErrorRE(self, regexp, fun, *args, **kwargs):
+		self.assertRaisesRegexp(AssertionError, regexp, fun, *args, **kwargs)
+	
+	def testExtendedAssertRaisesRE(self):
+		## test _testAssertionErrorRE several fail cases:
+		def _key_err(msg):
+			raise KeyError(msg)			
+		self.assertRaises(KeyError,
+			self._testAssertionErrorRE, r"^failed$", 
+				_key_err, 'failed')
+		self.assertRaises(AssertionError,
+			self._testAssertionErrorRE, r"^failed$",
+				self.fail, '__failed__')
+		self._testAssertionErrorRE(r'failed.* does not match .*__failed__',
+			lambda: self._testAssertionErrorRE(r"^failed$",
+				self.fail, '__failed__')
+		)
+		## no exception in callable:
+		self.assertRaises(AssertionError,
+			self._testAssertionErrorRE, r"", int, 1)
+		self._testAssertionErrorRE(r'0 AssertionError not raised X.* does not match .*AssertionError not raised',
+			lambda: self._testAssertionErrorRE(r"^0 AssertionError not raised X$",
+				lambda: self._testAssertionErrorRE(r"", int, 1))
+		)
+
+	def testExtendedAssertMethods(self):
+		## assertIn, assertNotIn positive case:
+		self.assertIn('a', ['a', 'b', 'c', 'd'])
+		self.assertIn('a', ('a', 'b', 'c', 'd',))
+		self.assertIn('a', 'cba')
+		self.assertIn('a', (c for c in 'cba' if c != 'b'))
+		self.assertNotIn('a', ['b', 'c', 'd'])
+		self.assertNotIn('a', ('b', 'c', 'd',))
+		self.assertNotIn('a', 'cbd')
+		self.assertNotIn('a', (c.upper() for c in 'cba' if c != 'b'))
+		## assertIn, assertNotIn negative case:
+		self._testAssertionErrorRE(r"'a' unexpectedly found in 'cba'",
+			self.assertNotIn, 'a', 'cba')
+		self._testAssertionErrorRE(r"1 unexpectedly found in \[0, 1, 2\]",
+			self.assertNotIn, 1, xrange(3))
+		self._testAssertionErrorRE(r"'A' unexpectedly found in \['C', 'A'\]",
+			self.assertNotIn, 'A', (c.upper() for c in 'cba' if c != 'b'))
+		self._testAssertionErrorRE(r"'a' was not found in 'xyz'",
+			self.assertIn, 'a', 'xyz')
+		self._testAssertionErrorRE(r"5 was not found in \[0, 1, 2\]",
+			self.assertIn, 5, xrange(3))
+		self._testAssertionErrorRE(r"'A' was not found in \['C', 'B'\]",
+			self.assertIn, 'A', (c.upper() for c in 'cba' if c != 'a'))
+		## assertLogged, assertNotLogged positive case:
+		logSys = DefLogSys
+		self.pruneLog()
+		logSys.debug('test "xyz"')
+		self.assertLogged('test "xyz"')
+		self.assertLogged('test', 'xyz', all=True)
+		self.assertNotLogged('test', 'zyx', all=False)
+		self.assertNotLogged('test_zyx', 'zyx', all=True)
+		self.assertLogged('test', 'zyx', all=False)
+		self.pruneLog()
+		logSys.debug('xxxx "xxx"')
+		self.assertNotLogged('test "xyz"')
+		self.assertNotLogged('test', 'xyz', all=False)
+		self.assertNotLogged('test', 'xyz', 'zyx', all=True)
+		## assertLogged, assertNotLogged negative case:
+		self.pruneLog()
+		logSys.debug('test "xyz"')
+		self._testAssertionErrorRE(r"All of the .* were found present in the log",
+			self.assertNotLogged, 'test "xyz"')
+		self._testAssertionErrorRE(r"was found in the log",
+			self.assertNotLogged, 'test', 'xyz', all=True)
+		self._testAssertionErrorRE(r"was not found in the log",
+			self.assertLogged, 'test', 'zyx', all=True)
+		self._testAssertionErrorRE(r"None among .* was found in the log",
+			self.assertLogged, 'test_zyx', 'zyx', all=False)
+		self._testAssertionErrorRE(r"All of the .* were found present in the log",
+			self.assertNotLogged, 'test', 'xyz', all=False)
 
 	def testFormatterWithTraceBack(self):
 		strout = StringIO()
diff --git a/fail2ban/tests/servertestcase.py b/fail2ban/tests/servertestcase.py
index 07e10c7d..21e2d784 100644
--- a/fail2ban/tests/servertestcase.py
+++ b/fail2ban/tests/servertestcase.py
@@ -228,7 +228,7 @@ class Transmitter(TransmitterBase):
 		time.sleep(1)
 		self.assertEqual(
 			self.transm.proceed(["stop", self.jailName]), (0, None))
-		self.assertTrue(self.jailName not in self.server._Server__jails)
+		self.assertNotIn(self.jailName, self.server._Server__jails)
 
 	def testStartStopAllJail(self):
 		self.server.addJail("TestJail2", "auto")
@@ -242,8 +242,8 @@ class Transmitter(TransmitterBase):
 		time.sleep(0.1)
 		self.assertEqual(self.transm.proceed(["stop", "all"]), (0, None))
 		time.sleep(1)
-		self.assertTrue(self.jailName not in self.server._Server__jails)
-		self.assertTrue("TestJail2" not in self.server._Server__jails)
+		self.assertNotIn(self.jailName, self.server._Server__jails)
+		self.assertNotIn("TestJail2", self.server._Server__jails)
 
 	def testJailIdle(self):
 		self.assertEqual(
diff --git a/fail2ban/tests/utils.py b/fail2ban/tests/utils.py
index 8fc78683..e091c935 100644
--- a/fail2ban/tests/utils.py
+++ b/fail2ban/tests/utils.py
@@ -22,6 +22,7 @@ __author__ = "Yaroslav Halchenko"
 __copyright__ = "Copyright (c) 2013 Yaroslav Halchenko"
 __license__ = "GPL"
 
+import itertools
 import logging
 import os
 import re
@@ -208,16 +209,45 @@ def gatherTests(regexps=None, no_network=False):
 	return tests
 
 
-# forwards compatibility of unittest.TestCase for some early python versions
-if not hasattr(unittest.TestCase, 'assertIn'):
-	def __assertIn(self, a, b, msg=None):
-		if a not in b: # pragma: no cover
-			self.fail(msg or "%r was not found in %r" % (a, b))
-	unittest.TestCase.assertIn = __assertIn
-	def __assertNotIn(self, a, b, msg=None):
-		if a in b: # pragma: no cover
-			self.fail(msg or "%r was found in %r" % (a, b))
-	unittest.TestCase.assertNotIn = __assertNotIn
+#
+# Forwards compatibility of unittest.TestCase for some early python versions
+#
+
+if not hasattr(unittest.TestCase, 'assertRaisesRegexp'):
+	def assertRaisesRegexp(self, exccls, regexp, fun, *args, **kwargs):
+		try:
+			fun(*args, **kwargs)
+		except exccls as e:
+			if re.search(regexp, e.message) is None:
+				self.fail('\"%s\" does not match \"%s\"' % (regexp, e.message))
+		else:
+			self.fail('%s not raised' % getattr(exccls, '__name__'))
+	unittest.TestCase.assertRaisesRegexp = assertRaisesRegexp
+
+# always custom following methods, because we use atm better version of both (support generators)
+if True: ## if not hasattr(unittest.TestCase, 'assertIn'):
+	def assertIn(self, a, b, msg=None):
+		bb = b
+		wrap = False
+		if msg is None and hasattr(b, '__iter__') and not isinstance(b, basestring):
+			b, bb = itertools.tee(b)
+			wrap = True
+		if a not in b:
+			if wrap: bb = list(bb)
+			msg = msg or "%r was not found in %r" % (a, bb)
+			self.fail(msg)
+	unittest.TestCase.assertIn = assertIn
+	def assertNotIn(self, a, b, msg=None):
+		bb = b
+		wrap = False
+		if msg is None and hasattr(b, '__iter__') and not isinstance(b, basestring):
+			b, bb = itertools.tee(b)
+			wrap = True
+		if a in b:
+			if wrap: bb = list(bb)
+			msg = msg or "%r unexpectedly found in %r" % (a, bb)
+			self.fail(msg)
+	unittest.TestCase.assertNotIn = assertNotIn
 
 
 class LogCaptureTestCase(unittest.TestCase):
@@ -241,6 +271,7 @@ class LogCaptureTestCase(unittest.TestCase):
 	def tearDown(self):
 		"""Call after every test case."""
 		# print "O: >>%s<<" % self._log.getvalue()
+		self.pruneLog()
 		logSys = getLogger("fail2ban")
 		logSys.handlers = self._old_handlers
 		logSys.level = self._old_level
@@ -248,7 +279,7 @@ class LogCaptureTestCase(unittest.TestCase):
 	def _is_logged(self, s):
 		return s in self._log.getvalue()
 
-	def assertLogged(self, *s):
+	def assertLogged(self, *s, **kwargs):
 		"""Assert that one of the strings was logged
 
 		Preferable to assertTrue(self._is_logged(..)))
@@ -258,14 +289,23 @@ class LogCaptureTestCase(unittest.TestCase):
 		----------
 		s : string or list/set/tuple of strings
 		  Test should succeed if string (or any of the listed) is present in the log
+		all : boolean (default False) if True should fail if any of s not logged
 		"""
 		logged = self._log.getvalue()
-		for s_ in s:
-			if s_ in logged:
-				return
-		raise AssertionError("None among %r was found in the log: %r" % (s, logged))
+		if not kwargs.get('all', False):
+			# at least one entry should be found:
+			for s_ in s:
+				if s_ in logged:
+					return
+			if True: # pragma: no cover
+				self.fail("None among %r was found in the log: ===\n%s===" % (s, logged))
+		else:
+			# each entry should be found:
+			for s_ in s:
+				if s_ not in logged: # pragma: no cover
+					self.fail("%r was not found in the log: ===\n%s===" % (s_, logged))
 
-	def assertNotLogged(self, *s):
+	def assertNotLogged(self, *s, **kwargs):
 		"""Assert that strings were not logged
 
 		Parameters
@@ -273,13 +313,22 @@ class LogCaptureTestCase(unittest.TestCase):
 		s : string or list/set/tuple of strings
 		  Test should succeed if the string (or at least one of the listed) is not
 		  present in the log
+		all : boolean (default False) if True should fail if any of s logged
 		"""
 		logged = self._log.getvalue()
-		for s_ in s:
-			if s_ not in logged:
-				return
-		raise AssertionError("All of the %r were found present in the log: %r" % (s, logged))
+		if not kwargs.get('all', False):
+			for s_ in s:
+				if s_ not in logged:
+					return
+			if True: # pragma: no cover
+				self.fail("All of the %r were found present in the log: ===\n%s===" % (s, logged))
+		else:
+			for s_ in s:
+				if s_ in logged: # pragma: no cover
+					self.fail("%r was found in the log: ===\n%s===" % (s_, logged))
 
+	def pruneLog(self):
+		self._log.truncate(0)
 
 	def getLog(self):
 		return self._log.getvalue()